.TH std::atomic_ref::is_lock_free 3 "2024.06.10" "http://cppreference.com" "C++ Standard Libary"
.SH NAME
std::atomic_ref::is_lock_free \- std::atomic_ref::is_lock_free

.SH Synopsis
   bool is_lock_free() const noexcept;  \fI(since C++20)\fP

   Checks whether the atomic operations on this object are lock-free.

.SH Parameters

   \fI(none)\fP

.SH Return value

   true if the atomic operations on this object are lock-free, false otherwise.

.SH Notes

   All atomic types except for std::atomic_flag may be implemented using mutexes or
   other locking operations, rather than using the lock-free atomic CPU instructions.
   Atomic types are also allowed to be sometimes lock-free, e.g. if only aligned memory
   accesses are naturally atomic on a given architecture, misaligned objects of the
   same type have to use locks.

   The C++ standard recommends (but does not require) that lock-free atomic operations
   are also address-free, that is, suitable for communication between processes using
   shared memory.

.SH Example

    This section is incomplete
    Reason: no example

.SH See also

   is_always_lock_free indicates that the type is always lock-free
   \fB[static]\fP            \fI(public static member constant)\fP

.SH Category:
     * Todo no example
